Hack The Sec-Leading Resource Of Linux Tutorial: Java9

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<span style="color: #990000;"><u><i>Install JAVA 9 (JDK9) on Debian Via PPA</i></u></span></h2>
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<span style="border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border: 0px; font-size: inherit; font-weight: 700; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">Oracle JAVA 9</span> Early Access release is available to download and install. Java 9 stable release is supposed to be come in 2017. So you have to wait for Java 9 stable version.</div>
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Note: Currently JAVA 9 is in early access release, so use this version for development and research only. For production servers we recommend to use Java 8 stable release. Use <a href="http://www.hackthesec.co.in/2016/01/how-to-install-java-8-on-debian-7-8-via.html" style="outline: none; text-decoration: none;" target="_blank">this article</a> to install Java 8 on Debian system.</div>
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Step 1 – Add JAVA 9 PPA</h2>
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First you need to add webupd8team Java PPA repository in your system. Edit a new ppa file <span style="color: red;"><b>/etc/apt/sources.list.d/java-9-debian.list</b></span> in text editor</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Courier New, Courier, monospace; font-size: large;"><span style="color: white;">$ sudo vim /etc/apt/sources.list.d/</span><span style="color: lime;">java-9-debian.list</span><span style="color: white;">
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and add following content in it.</div>
<pre class="pretty" style="background: none 0px 0px repeat scroll rgb(240, 240, 240); border-left-color: rgb(116, 183, 63); border-left-width: 3px; border-radius: 5px; border-style: none none none solid; line-height: 1.5em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 8px 20px 8px 18px; vertical-align: baseline;"><span style="font-family: Courier New, Courier, monospace; font-size: large;">deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main
deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main</span><span style="font-size: 0.9em;">
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Now import GPG key on your system for validate packages before installing them.</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Courier New, Courier, monospace; font-size: large;"><span style="color: white;">$ sudo apt-key adv </span><span style="color: lime;">--keyserver keyserver.ubuntu.com</span><span style="color: white;"> --recv-keys EEA14886
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<span style="color: #0b5394;">Step 2 – Install JAVA 9</span></h2>
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Now install Oracle JAVA 9 early release using following set of commands.</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Courier New, Courier, monospace; font-size: large;"><span style="color: white;">$ sudo </span><span style="color: lime;"><orange>apt-get</orange> update</span><span style="color: white;">
$ sudo </span><orange><span style="color: white;">apt-get</span></orange><span style="color: white;"> install </span><span style="color: lime;">oracle-java9-installer</span></span><span style="color: white; font-size: 0.9em;">
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<span style="color: #0b5394;">Step 3 – Verify Java Version</span></h2>
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Now you have successfully installed JAVA 9 on your Debian system. Let’s verify installed version of JAVA on your system using following command.</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Courier New, Courier, monospace; font-size: large;"><span style="color: white;">root@hackthesec:~$ </span><span style="color: lime;">java </span><span style="color: white;">-version

java version "</span><span style="color: lime;">1.9.0-ea</span><span style="color: white;">"
Java(TM) SE Runtime Environment (build 1.9.0-ea-b50)
Java HotSpot(TM) 64-Bit Server VM (build 1.9.0-ea-b50, mixed mode)</span></span><span style="color: white; font-size: 0.9em;">
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<span style="color: #0b5394;">Configuring Java Environment</span></h2>
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In Webupd8 ppa repository also providing a package to set environment variables, Install this package using following command. This will set the useful environment variables for JAVA in your system.</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Courier New, Courier, monospace; font-size: large;"><span style="color: white;">$ sudo </span><span style="color: lime;">apt-get <orange>install</orange></span><span style="color: white;"> oracle-java9-set-default
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<span style="border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border: 0px; font-size: inherit; font-weight: 700; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">References:</span><br /><a href="https://launchpad.net/~webupd8team/+archive/java" style="outline: none; text-decoration: none;" target="_blank">https://launchpad.net/~webupd8team/+archive/java</a></div>
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How to Install JAVA 9 (JDK9) on Debian Via PPA

Install JAVA 9 (JDK9) on Debian Via PPA Oracle JAVA 9 Early Access release is available to download and install. Java 9 stable release is supposed to be come in 2017. So you have to wait for Java 9 s…